I use a streaming service for my music (Deezer) and sync my favourite albums and playlists locally on my micro SD card. It's also a 32GB (SanDisk I think)
Apps can't install on the memory card on kitkat afaik...
Didn't get it on mine, had it previously on my S3 so it refused to load on S5. Will probably end up signing up a new account, claim the space on that, then move everything over to the new account.